Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Washington, Climate Division 1

December 1949 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1949 1-Month	1.59	-0.19	1.78	111th Driest	Driest since: 1948	1985
December 1949 1-Month	1.59	-0.19	1.78	20th Wettest	Wettest since: 1939	1933
Nov–Dec 1949 2-Month	1.49	-0.03	1.52	113th Driest	Driest since: 1948	1976
Nov–Dec 1949 2-Month	1.49	-0.03	1.52	18th Wettest	Wettest since: 1937	1998
Oct–Dec 1949 3-Month	0.82	-0.04	0.86	98th Driest	Driest since: 1948	2013
Oct–Dec 1949 3-Month	0.82	-0.04	0.86	33rd Wettest	Wettest since: 1937	1975
Sep–Dec 1949 4-Month	0.47	-0.03	0.50	89th Driest	Driest since: 1947	1976
Sep–Dec 1949 4-Month	0.47	-0.03	0.50	42nd Wettest	Wettest since: 1948	1933
Aug–Dec 1949 5-Month	0.43	-0.05	0.48	94th Driest	Driest since: 1947	1929
Aug–Dec 1949 5-Month	0.43	-0.05	0.48	37th Wettest	Wettest since: 1948	1975
Jul–Dec 1949 6-Month	0.44	-0.08	0.52	98th Driest	Driest since: 1947	1930
Jul–Dec 1949 6-Month	0.44	-0.08	0.52	33rd Wettest	Wettest since: 1948	1975
Jun–Dec 1949 7-Month	0.25	-0.06	0.31	83rd Driest	Driest since: 1946	1944
Jun–Dec 1949 7-Month	0.25	-0.06	0.31	48th Wettest	Wettest since: 1948	1997
May–Dec 1949 8-Month	0.04	-0.04	0.08	71st Driest	Driest since: 1946	2023
May–Dec 1949 8-Month	0.04	-0.04	0.08	60th Wettest	Wettest since: 1948	1997
Apr–Dec 1949 9-Month	-0.05	-0.04	-0.01	63rd Driest	Driest since: 1946	1935
Apr–Dec 1949 9-Month	-0.05	-0.04	-0.01	68th Wettest	Wettest since: 1948	1997
Mar–Dec 1949 10-Month	-0.19	-0.05	-0.14	51st Driest	Driest since: 1944	1992
Mar–Dec 1949 10-Month	-0.19	-0.05	-0.14	80th Wettest	Wettest since: 1948	1997
Feb–Dec 1949 11-Month	0.09	-0.06	0.15	76th Driest	Driest since: 1947	1992
Feb–Dec 1949 11-Month	0.09	-0.06	0.15	55th Wettest	Wettest since: 1948	1997
Jan–Dec 1949 12-Month	-0.15	-0.06	-0.09	59th Driest	Driest since: 1944	2019
Jan–Dec 1949 12-Month	-0.15	-0.06	-0.09	72nd Wettest	Wettest since: 1948	1997
Jul 1948–Dec 1949 18-Month	0.24	-0.06	0.30	96th Driest	Driest since: 1947	2023
Jul 1948–Dec 1949 18-Month	0.24	-0.06	0.30	34th Wettest	Wettest since: 1948	1997
Jan 1948–Dec 1949 24-Month	0.33	-0.05	0.38	104th Driest	Driest since: 1948	1930
Jan 1948–Dec 1949 24-Month	0.33	-0.05	0.38	26th Wettest	Wettest since: 1948	1997
Jan 1947–Dec 1949 36-Month	0.17	-0.05	0.22	92nd Driest	Driest since: 1947	1930
Jan 1947–Dec 1949 36-Month	0.17	-0.05	0.22	37th Wettest	Wettest since: 1948	1997
Jan 1946–Dec 1949 48-Month	0.13	-0.05	0.18	90th Driest	Driest since: 1947	1925
Jan 1946–Dec 1949 48-Month	0.13	-0.05	0.18	38th Wettest	Wettest since: 1948	1999
Jan 1945–Dec 1949 60-Month	0.09	-0.05	0.14	87th Driest	Driest since: 1948	1926
Jan 1945–Dec 1949 60-Month	0.09	-0.05	0.14	40th Wettest	Wettest since: 1937	1903

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Washington, Climate Division 1

December 1949 Palmer Z-Index Rankings

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